The following research was undertaken at the suggestion of Professor Marston Taylor Bogert to whose interest and advice this work owes whatever merit it may possess.

Y. G. CHEN.

[CONTENTS]

[Acknowledgment and Dedication]2
[Abstract of the Dissertation]4
[Purpose of the Research]5
[Introduction]7
[Pharmacological Review]8
[Tinctorial Review]14
[Experimental:]16
[2-methyl-4-selenoquinazolone]
Four Methods of Preparation
[Analysis of Selenium Organic Compounds]
[2-phenylbenzoselenazole]
[Mononitro Derivative]
[Monoamino Derivative]
[Monoacetyl Derivative]
[Monobenzylidene Derivative]
[An Azo Dye]
[Dinitro Derivative]
[Diamino Derivative]
[Diacetyl and Dibenzylidene Derivatives]
[Dyeing with Azo Dyes]
[Bibliography]25
[Vita]28

[ABSTRACT OF THE DISSERTATION]

1. What was attempted?